<template>
  <div class="flex_row">
    <el-image v-if="imageUrl" :src="imageUrl" class="avatar margin_r_15" :preview-src-list="srcList"></el-image>

    <el-upload
      class="avatar-uploader"
      action="https://jsonplaceholder.typicode.com/posts/"
      :show-file-list="false"
      :on-success="handleAvatarSuccess"
      :before-upload="beforeAvatarUpload"
    >

      <i class="el-icon-plus avatar-uploader-icon"></i>
    </el-upload>
  </div>
</template>

<script>
export default {
  data () {
    return {
      imageUrl: '',
      srcList: []
    }
  },
  methods: {
    handleAvatarSuccess (res, file) {
      this.imageUrl = URL.createObjectURL(file.raw)
      this.srcList = [this.imageUrl]
    },
    beforeAvatarUpload (file) {
      const isJPG = file.type === 'image/jpeg'
      const isLt2M = file.size / 1024 / 1024 < 2

      if (!isJPG) {
        this.$message.error('上传头像图片只能是 JPG 格式!')
      }
      if (!isLt2M) {
        this.$message.error('上传头像图片大小不能超过 2MB!')
      }
      return isJPG && isLt2M
    }
  }
}
</script>

<style lang="less" scoped>
.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.avatar-uploader .el-upload:hover {
  border-color: #409eff;
}
.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 100px;
  height: 100px;
  line-height: 100px;
  text-align: center;
}
.avatar {
  width: 160px;
  height: 90px;
//   width: 178px;
//   height: 178px;
  display: block;
}
</style>
